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-- ansicolors.lua v1.0.2 (2012-08)
-- Copyright (c) 2009 Rob Hoelz <rob@hoelzro.net>
-- Copyright (c) 2011 Enrique García Cota <enrique.garcia.cota@gmail.com>
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.
-- support detection
local function isWindows()
return type(package) == 'table' and type(package.config) == 'string' and package.config:sub(1,1) == '\\'
end
local supported = not isWindows()
if isWindows() then supported = os.getenv("ANSICON") end
local keys = {
-- reset
reset = 0,
-- misc
bright = 1,
dim = 2,
underline = 4,
blink = 5,
reverse = 7,
hidden = 8,
-- foreground colors
black = 30,
red = 31,
green = 32,
yellow = 33,
blue = 34,
magenta = 35,
cyan = 36,
white = 37,
-- background colors
blackbg = 40,
redbg = 41,
greenbg = 42,
yellowbg = 43,
bluebg = 44,
magentabg = 45,
cyanbg = 46,
whitebg = 47
}
local escapeString = string.char(27) .. '[%dm'
local function escapeNumber(number)
return escapeString:format(number)
end
local function escapeKeys(str)
if not supported then return "" end
local buffer = {}
local number
for word in str:gmatch("%w+") do
number = keys[word]
assert(number, "Unknown key: " .. word)
table.insert(buffer, escapeNumber(number) )
end
return table.concat(buffer)
end
local function replaceCodes(str)
str = string.gsub(str,"(%%{(.-)})", function(_, str) return escapeKeys(str) end )
return str
end
-- public
local function ansicolors( str )
str = tostring(str or '')
return replaceCodes('%{reset}' .. str .. '%{reset}')
end
return setmetatable({noReset = replaceCodes}, {__call = function (_, str) return ansicolors (str) end})
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